297 lines
6.5 KiB
Bash
297 lines
6.5 KiB
Bash
# Copyright 2007 Roy Marples
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# All rights reserved
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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ifconfig_depend() {
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program /sbin/ifconfig
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provide interface
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}
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_up() {
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ifconfig "${IFACE}" up
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}
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_down() {
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ifconfig "${IFACE}" down
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}
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_exists() {
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grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/dev
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}
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_ifindex() {
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local line= i=-2
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while read line; do
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i=$((${i} + 1))
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[ ${i} -lt 1 ] && continue
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case "${line}" in
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"${IFACE}:"*) echo "${i}"; return 0;;
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esac
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done < /proc/net/dev
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# Return the next available index
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i=$((${i} + 1))
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echo "${i}"
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return 1
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}
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_is_wireless() {
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# Support new sysfs layout
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[ -d /sys/class/net/"${IFACE}"/wireless ] && return 0
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[ ! -e /proc/net/wireless ] && return 1
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grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/wireless
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}
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_set_flag() {
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ifconfig "${IFACE}" "$1"
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}
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_get_mac_address() {
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local mac=$(LC_ALL=C ifconfig "${IFACE}" | \
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sed -n -e 's/.* HWaddr \(..:..:..:..:..:..\).*/\1/p')
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case "${mac}" in
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00:00:00:00:00:00);;
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44:44:44:44:44:44);;
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FF:FF:FF:FF:FF:FF);;
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"");;
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*) echo "${mac}"; return 0;;
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esac
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return 1
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}
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_set_mac_address() {
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ifconfig "${IFACE}" hw ether "$1"
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}
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_get_inet_address() {
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set -- $(LC_ALL=C ifconfig "${IFACE}" |
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sed -n -e 's/.*inet addr:\([^ ]*\).*Mask:\([^ ]*\).*/\1 \2/p')
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[ -z "$1" ] && return 1
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echo -n "$1"
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shift
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echo "/$(_netmask2cidr "$1")"
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}
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_get_inet_addresses() {
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local iface=${IFACE} i=0
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local addrs="$(_get_inet_address)"
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while true; do
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local IFACE="${iface}:${i}"
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_exists || break
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local addr="$(_get_inet_address)"
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[ -n "${addr}" ] && addrs="${addrs}${addrs:+ }${addr}"
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i=$((${i} + 1))
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done
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echo "${addrs}"
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}
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_cidr2netmask() {
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local cidr="$1" netmask="" done=0 i=0 sum=0 cur=128
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local octets= frac=
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local octets=$((${cidr} / 8))
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local frac=$((${cidr} % 8))
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while [ ${octets} -gt 0 ]; do
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netmask="${netmask}.255"
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octets=$((${octets} - 1))
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done=$((${done} + 1))
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done
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if [ ${done} -lt 4 ]; then
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while [ ${i} -lt ${frac} ]; do
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sum=$((${sum} + ${cur}))
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cur=$((${cur} / 2))
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i=$((${i} + 1))
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done
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netmask="${netmask}.${sum}"
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done=$((${done} + 1))
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while [ ${done} -lt 4 ]; do
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netmask="${netmask}.0"
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done=$((${done} + 1))
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done
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fi
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echo "${netmask#.*}"
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}
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_add_address() {
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if [ "$1" = "127.0.0.1/8" -a "${IFACE}" = "lo" ]; then
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ifconfig "${IFACE}" "$@" 2>/dev/null
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return 0
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fi
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case "$1" in
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*:*) ifconfig "${IFACE}" inet6 add "$@"; return $?;;
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esac
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# IPv4 is tricky - ifconfig requires an aliased device
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# for multiple addresses
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local iface="${IFACE}"
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if LC_ALL=C ifconfig "${iface}" | grep -Eq "\<inet addr:.*"; then
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# Get the last alias made for the interface and add 1 to it
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i=$(ifconfig | sed '1!G;h;$!d' | grep -m 1 -o "^${iface}:[0-9]*" \
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| sed -n -e 's/'"${iface}"'://p')
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i=$((${i:-0} + 1))
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iface="${iface}:${i}"
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fi
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# ifconfig doesn't like CIDR addresses
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local ip="${1%%/*}" cidr="${1##*/}" netmask=
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if [ -n "${cidr}" -a "${cidr}" != "${ip}" ]; then
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netmask="$(_cidr2netmask "${cidr}")"
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shift
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set -- "${ip}" netmask "${netmask}" "$@"
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fi
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local arg= cmd=
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while [ -n "$1" ]; do
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case "$1" in
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brd)
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if [ "$2" = "+" ]; then
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shift
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else
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cmd="${cmd} broadcast"
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fi
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;;
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peer) cmd="${cmd} pointtopoint";;
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*) cmd="${cmd} $1";;
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esac
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shift
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done
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ifconfig "${iface}" ${cmd}
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}
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_add_route() {
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local inet6=
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if [ -n "${metric}" ]; then
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set -- "$@" metric ${metric}
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fi
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if [ $# -eq 3 ]; then
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set -- "$1" "$2" gw "$3"
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elif [ "$3" = "via" ]; then
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local one=$1 two=$2
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shift; shift; shift
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set -- "${one}" "${two}" gw "$@"
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fi
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case "$@" in
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*:*)
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inet6="-A inet6"
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[ "$1" = "-net" ] && shift
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;;
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esac
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route ${inet6} add "$@" dev "${IFACE}"
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}
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_delete_addresses() {
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# We don't remove addresses from aliases
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case "${IFACE}" in
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*:*) return 0;;
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esac
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einfo "Removing addresses"
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eindent
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# iproute2 can add many addresses to an iface unlike ifconfig ...
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# iproute2 added addresses cause problems for ifconfig
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# as we delete an address, a new one appears, so we have to
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# keep polling
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while true; do
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local addr=$(_get_inet_address)
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[ -z "${addr}" ] && break
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if [ "${addr}" = "127.0.0.1/8" ]; then
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# Don't delete the loopback address
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[ "${IFACE}" = "lo" -o "${IFACE}" = "lo0" ] && break
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fi
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einfo "${addr}"
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ifconfig "${IFACE}" 0.0.0.0 || break
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done
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# Remove IPv6 addresses
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local addr=
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for addr in $(LC_ALL=C ifconfig "${IFACE}" | \
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sed -n -e 's/^.*inet6 addr: \([^ ]*\) Scope:[^L].*/\1/p'); do
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[ "${addr}" = "::1/128" -a "${IFACE}" = "lo" ] && continue
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einfo "${addr}"
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ifconfig "${IFACE}" inet6 del "${addr}"
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done
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return 0
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}
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_has_carrier() {
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return 0
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}
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_tunnel() {
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iptunnel "$@"
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}
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ifconfig_pre_start() {
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# MTU support
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local mtu=
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eval mtu=\$mtu_${IFVAR}
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[ -n "${mtu}" ] && ifconfig "${IFACE}" mtu "${mtu}"
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# TX Queue Length support
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local len=
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eval len=\$txqueuelen_${IFVAR}
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[ -n "${len}" ] && ifconfig "${IFACE}" txqueuelen "${len}"
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local tunnel=
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eval tunnel=\$iptunnel_${IFVAR}
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[ -z "${tunnel}" ] && return 0
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# Set our base metric to 1000
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metric=1000
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ebegin "Creating tunnel ${IFVAR}"
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iptunnel add "${tunnel}"
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eend $?
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}
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ifconfig_post_stop() {
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# Don't delete sit0 as it's a special tunnel
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[ "${IFACE}" = "sit0" ] && return 0
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[ -z "$(iptunnel show "${IFACE}" 2>/dev/null)" ] && return 0
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ebegin "Destroying tunnel ${IFACE}"
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iptunnel del "${IFACE}"
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eend $?
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}
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# vim: set ts=4 :
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